diff --git a/backend/app/services/csv_import.py b/backend/app/services/csv_import.py
index 28dcb0e..fac8539 100644
--- a/backend/app/services/csv_import.py
+++ b/backend/app/services/csv_import.py
@@ -209,6 +209,22 @@ def _guess_target_account(text_idents: list[tuple[str, int]], payee: str, purpos
     return best[1] if best else None
 
 
+# Fenster, in dem eine Buchung als Gegenseite eines bestehenden Transfers gilt
+# (Buchungs-/Valutadatum können ein paar Tage auseinanderliegen).
+COUNTERPART_DAYS = 5
+
+
+def _is_counterpart(transfer_index: dict, account_id: int, other_id: int, d: date, amount: int) -> bool:
+    """True, wenn schon ein Transfer zwischen denselben Konten existiert, dessen
+    Betrag (Soll- oder Haben-Seite) zu dieser Buchung passt – dann ist es die
+    bereits gebuchte Gegenseite und darf nicht erneut zählen."""
+    absamt = abs(amount)
+    for t_date, amt, to_amt in transfer_index.get(frozenset((account_id, other_id)), []):
+        if abs((t_date - d).days) <= COUNTERPART_DAYS and absamt in (amt, to_amt):
+            return True
+    return False
+
+
 def parse_file_to_candidates(data: bytes, template: ImportTemplate) -> list[dict]:
     """Zerlegt die Datei anhand des Templates in rohe Kandidaten-Zeilen."""
     cmap = json.loads(template.column_map or "{}")
@@ -272,6 +288,18 @@ def detect_rows(db: Session, user: User, account: Account, candidates: list[dict
             Transaction.owner_id == user.id, Transaction.import_hash.isnot(None)
         )
     }
+    # Bestehende Transfers je Konto-Paar: erkennt die Gegenbuchung, wenn beide
+    # Auszüge eines Übertrags importiert werden (sonst zählt die Bewegung doppelt).
+    transfer_index: dict[frozenset, list[tuple]] = {}
+    for t_acc, t_to, t_date, t_amt, t_to_amt in (
+        db.query(Transaction.account_id, Transaction.to_account_id, Transaction.date,
+                 Transaction.amount_cents, Transaction.to_amount_cents)
+        .filter(Transaction.owner_id == user.id, Transaction.type == TxnType.transfer,
+                Transaction.to_account_id.isnot(None))
+    ):
+        transfer_index.setdefault(frozenset((t_acc, t_to)), []).append(
+            (t_date, t_amt, t_to_amt if t_to_amt is not None else t_amt)
+        )
     seen: set[str] = set()
 
     out: list[dict] = []
@@ -290,6 +318,10 @@ def detect_rows(db: Session, user: User, account: Account, candidates: list[dict
         to_account_id: int | None = None
 
         other = idents.get(iban) if iban else None
+        if other is None:
+            # Symmetrisch: enthält der Text den Erkennungs-Text eines ANDEREN
+            # Kontos, ist es ein Transfer von/zu diesem Konto (auch Eingänge).
+            other = _guess_target_account(text_idents, payee or "", purpose or "", account.id)
         if other is not None and other != account.id:
             ttype = "transfer"
             to_account_id = other
@@ -312,6 +344,13 @@ def detect_rows(db: Session, user: User, account: Account, candidates: list[dict
         is_dup = h in existing or h in seen
         seen.add(h)
 
+        # Gegenbuchung eines bereits gebuchten Transfers? Dann nicht erneut buchen.
+        is_counterpart = (
+            ttype == "transfer" and to_account_id is not None
+            and d is not None and amount is not None
+            and _is_counterpart(transfer_index, account.id, to_account_id, d, amount)
+        )
+
         out.append({
             "index": i,
             "date": d.isoformat() if d else None,
@@ -326,7 +365,8 @@ def detect_rows(db: Session, user: User, account: Account, candidates: list[dict
             "to_account_id": to_account_id,
             "import_hash": h,
             "is_duplicate": is_dup,
-            "include": valid and not is_dup,
+            "is_counterpart": is_counterpart,
+            "include": valid and not is_dup and not is_counterpart,
         })
     return out
 
diff --git a/backend/tests/test_keywords.py b/backend/tests/test_keywords.py
index 1148e16..a2ac6ce 100644
--- a/backend/tests/test_keywords.py
+++ b/backend/tests/test_keywords.py
@@ -270,6 +270,35 @@ def test_transfer_keyword_fixed_target(admin):
     assert r2.json()["target_account_id"] == giro["id"]
 
 
+def test_incoming_transfer_via_account_tag(admin):
+    # Erkennungs-Text am Quellkonto (Raiffeisen); Eingang auf Revolut wird zum
+    # Transfer VON Raiffeisen (symmetrische Erkennung, ohne Schlagwort).
+    revolut = _account(admin, name="Revolut Sym", identifiers=[{"kind": "text", "value": "Revolut"}])
+    raiff = _account(admin, name="Raiffeisen Sym", identifiers=[{"kind": "text", "value": "Raiffeisen"}])
+    csv = "Datum;Betrag;Empfaenger;Zweck\n01.03.2026;120,00;Gutschrift;Uebertrag Raiffeisen\n"
+    rows = _preview_csv(admin, revolut["id"], csv, COLMAP)
+    assert rows[0]["type"] == "transfer"
+    assert rows[0]["to_account_id"] == raiff["id"]
+
+
+def test_transfer_counterpart_skipped(admin):
+    a = _account(admin, name="Konto A CP", identifiers=[{"kind": "text", "value": "KontoA"}])
+    b = _account(admin, name="Konto B CP", identifiers=[{"kind": "text", "value": "KontoB"}])
+    # A-Auszug: Ausgang -100 mit „KontoB" -> Transfer nach B; buchen.
+    rowsA = _preview_csv(admin, a["id"],
+                         "Datum;Betrag;Empfaenger;Zweck\n05.03.2026;-100,00;Uebertrag;an KontoB\n", COLMAP)
+    assert rowsA[0]["type"] == "transfer" and rowsA[0]["to_account_id"] == b["id"]
+    r = admin.post("/api/imports/commit", json={"account_id": a["id"], "filename": "a.csv", "rows": rowsA})
+    assert r.status_code == 200 and r.json()["imported_count"] == 1
+
+    # B-Auszug: Eingang +100 (2 Tage später) mit „KontoA" -> Gegenbuchung, nicht gebucht.
+    rowsB = _preview_csv(admin, b["id"],
+                         "Datum;Betrag;Empfaenger;Zweck\n07.03.2026;100,00;Gutschrift;von KontoA\n", COLMAP)
+    assert rowsB[0]["type"] == "transfer"
+    assert rowsB[0]["is_counterpart"] is True
+    assert rowsB[0]["include"] is False
+
+
 def test_same_word_across_kinds_allowed(admin):
     a, b = _expense_cats(admin, 2)
     inc = _income_cat(admin)
diff --git a/web/src/locales/de.json b/web/src/locales/de.json
index 2f534a3..ed15a9f 100644
--- a/web/src/locales/de.json
+++ b/web/src/locales/de.json
@@ -316,6 +316,7 @@
     "payeeCol": "Empfänger / Zweck",
     "badDate": "Datum?",
     "duplicate": "Duplikat",
+    "counterpart": "Gegenbuchung",
     "chooseAccount": "Konto wählen",
     "history": "Import-Verlauf",
     "undo": "Rückgängig",
diff --git a/web/src/locales/en.json b/web/src/locales/en.json
index 7684c84..51ce99a 100644
--- a/web/src/locales/en.json
+++ b/web/src/locales/en.json
@@ -316,6 +316,7 @@
     "payeeCol": "Payee / purpose",
     "badDate": "Date?",
     "duplicate": "Duplicate",
+    "counterpart": "Counterpart",
     "chooseAccount": "Choose account",
     "history": "Import history",
     "undo": "Undo",
diff --git a/web/src/pages/Import.jsx b/web/src/pages/Import.jsx
index 592a9a0..63f4e10 100644
--- a/web/src/pages/Import.jsx
+++ b/web/src/pages/Import.jsx
@@ -247,6 +247,7 @@ export default function Import() {
         <span className="ellipsis" style={{ display: "block" }}>
           {r.payee || r.purpose || ""}
           {r.is_duplicate && <span className="badge" style={{ marginLeft: 6 }}>{t("import.duplicate")}</span>}
+          {r.is_counterpart && <span className="badge" style={{ marginLeft: 6 }}>{t("import.counterpart")}</span>}
         </span>
       ),
     },
@@ -526,7 +527,7 @@ export default function Import() {
             id="import-review"
             rows={rows}
             getRowKey={(r) => r.index}
-            rowClassName={(r) => (!r.valid ? "row-invalid" : r.is_duplicate ? "row-dup" : "")}
+            rowClassName={(r) => (!r.valid ? "row-invalid" : r.is_duplicate || r.is_counterpart ? "row-dup" : "")}
             columns={reviewColumns}
           />
         </div>